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Teat pump hot water supply device

A supply device, heat pump hot water technology, applied in heat pumps, residential hot water supply systems, heat storage heaters, etc., can solve problems such as inability to heat, low efficiency, etc., to eliminate hot water alarm, improve installation, low cost effect

Inactive Publication Date: 2008-12-10
HITACHI APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, in such a hot water supply device, when the heating capacity of the heat pump is large relative to the small hot water storage capacity, since the heat is heated in a short time with a large capacity exceeding the need, it has to perform inefficient operation. On the contrary, when the heating capacity of the heat pump is small relative to the large hot water storage capacity, it is impossible to heat all the water in the hot water storage tank within the specified time.

Method used

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  • Teat pump hot water supply device
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  • Teat pump hot water supply device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] figure 1 It is a block diagram showing a heat pump hot water supply device constructed using the present invention. As shown in the figure, the component structure of the heat pump hot water supply device includes: a heat pump refrigerant circuit 1 ; a hot water supply circuit 3 ; and an operation control mechanism 5 . Furthermore, in terms of installation, it consists of a heat source unit A and a hot water storage unit B, and is connected to each other through a water supply side connection pipe 91 , a hot water supply side connection pipe 93 , and a low voltage control wiring 95 . In addition, the heat source unit A is connected to each remote controller and a power supply (not shown), and the hot water storage unit B is connected to water supply and hot water outlet pipes.

[0050] The heat pump refrigerant circuit adopts a 2-cycle method composed of 2 refrigerant circuits, and is composed of a first closed circuit and a second closed circuit. The first closed circ...

Embodiment approach 2

[0062] As described above, each user can select a hot water storage unit corresponding to the size of the hot water storage capacity as desired. Here, we consider two situations when the hot water storage capacity is 50L and 100L. In the case of the hot water storage type, it is important to heat the hot water filled with the hot water storage capacity with the best efficiency within the specified time, but in the case of the direct hot water outlet function, it is important not to Restricted by time, hot water supply without interruption can be realized with the highest efficiency at any time. Generally, the temperature of the hot water stored in the hot water storage tank is controlled at 60°C or above in terms of sanitation, and the temperature of the hot water that is directly discharged from the hot water is about 38°C to 45°C. Considering the heat pump refrigerant In the case of the efficiency of the circuit and the heat loss when storing hot water, it will be more effi...

Embodiment 3

[0065] Second, refer to image 3 Control of the water circulation amount of the circulation pump 45 will be described. As mentioned above, the hot water storage tank afterburning operation is performed every time hot water is discharged, so the number of times has a great influence on the overall efficiency. When the low-temperature water in the lower part of the hot water tank is reheated by the water-refrigerant heat exchanger, the heat pump efficiency during the afterburn operation of the hot water tank is maintained at a high efficiency state. However, when the boundary layer (mixed layer of hot water and water) that ensures the two-layer distribution of hot water and low-temperature water in the hot-water storage tank is disturbed, the temperature of the low-temperature water in the lower part of the hot-water storage tank rises and enters the water The temperature of the water in the refrigerant heat exchanger rises, and the efficiency of the heat pump decreases extreme...

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Abstract

The hot water supply device of the present invention has: a heat pump refrigerant circuit, which is connected to a compressor, a water refrigerant heat exchanger, a decompression device, and an evaporator through a refrigerant pipeline; and a hot water supply circuit, which is connected to a water supply port through a water pipeline , a bypass valve, a water supply check valve, a water refrigerant heat exchanger, and a hot water outlet for outputting heated hot water through the first flow regulating valve; a water supply circuit; The piping connects the branch piping branched from the hot water supply circuit and the circulation pump that sends the water from the hot water storage tank to the water refrigerant heat exchanger; the hot water supply device is characterized in that the water piping and the low The voltage control wiring connects the heat source unit that heats water and the hot water storage unit, so it is possible to provide an instant kettle-shaped heat pump hot water supply device that is excellent in installation, construction, and usability.

Description

technical field [0001] The invention relates to a heat pump hot water supply device which can directly supply hot water heated by a water refrigerant heat exchanger to a water outlet end. Background technique [0002] Generally, a heat pump hot water supply device operates a heating device at night when electricity is cheap, fills a hot water storage tank with hot water and stores it, and supplies it for daytime use. In general, the heating capacity of the heat source unit for heating water and the capacity of the hot water storage tank for storing heated hot water are used in combination 1:1, and the heating capacity of the heat pump refrigerant circuit is set according to the hot water storage capacity. That is, in such a hot water supply device, when the heating capacity of the heat pump is large relative to the small hot water storage capacity, since the heat is heated in a short time with a large capacity exceeding the need, it has to perform inefficient operation. On ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H4/04F24H1/00
CPCF24D17/02F24H1/12F24H4/02F24H7/00F25B30/02
Inventor 松林秀舟越砂穗石山明彦齐藤健一权守仁彦
Owner HITACHI APPLIANCES INC
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